KAFKA-19082: [1/4] Add client config for enable2PC and overloaded initProducerId (KIP-939)

[arvi18]

This is part of the client side changes required to enable 2PC for
KIP-939

Producer Config:
transaction.two.phase.commit.enable The default would be ‘false’. If
set to ‘true’, the broker is informed that the client is participating
in two phase commit protocol and transactions that this client starts
never expire.

Overloaded InitProducerId method
If the value is 'true' then the corresponding field is set in the
InitProducerIdRequest

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📥 Commits

Reviewing files that changed from the base of the PR and between ed79212 and 4a08713.

📒 Files selected for processing (9)

• clients/src/main/java/org/apache/kafka/clients/producer/KafkaProducer.java (2 hunks)
• clients/src/main/java/org/apache/kafka/clients/producer/MockProducer.java (1 hunks)
• clients/src/main/java/org/apache/kafka/clients/producer/Producer.java (1 hunks)
• clients/src/main/java/org/apache/kafka/clients/producer/ProducerConfig.java (3 hunks)
• clients/src/main/java/org/apache/kafka/clients/producer/internals/TransactionManager.java (5 hunks)
• clients/src/test/java/org/apache/kafka/clients/producer/KafkaProducerTest.java (4 hunks)
• clients/src/test/java/org/apache/kafka/clients/producer/ProducerConfigTest.java (1 hunks)
• clients/src/test/java/org/apache/kafka/clients/producer/internals/SenderTest.java (18 hunks)
• clients/src/test/java/org/apache/kafka/clients/producer/internals/TransactionManagerTest.java (5 hunks)

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